Rotary offset printing machine for printing selected sections of a printing form



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ROTARY OFFSET PRINTING MACHINE FOR PRINTING SELECTED SECTIONS OF A PRINTING FORM Filed Nov. 8, 1962 6 Sheets-Sheet 3 Fig. 3

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ROTARY OFFSET PRINTING MACHINE FOR PRINTING SELECTED SECTIONS OF A PRINTING FORM Filed Nov. 8, 1962 6 Sheets-Sheet 6 R \f 9 '-L 2 :2 Y a Q I 5 a l ("E a J0 ve nfars Al 0f); 2112 a 7 ZL-M x fink,

United States Patent 3,155,036 RGTARY BFFSET PRINTTNG MAQHINE FOR PRINTING SELEGTED SECTIONS OF A PRINTENG FORM Wilhelm Ritzerfeld, Schorlemer Allee 14, Berlin-Dahiem, Germany, and Gerhard Ritzerfeld, Franzenshader Strasse 21, Berlin-Grnnewald, Germany Filed Nov. 8, 1962, Ser. No. 236,309 Claims priority, application Germany, Nov. 9, 1961, R 31,432 15 Claims. (Cl. 101-144) The present invention relates to an offset printing machine for printing sections of a printing form by two different offset rollers on one copy sheet, and more particularly to an offset printing machine in which the main cylinder carries a printing form and a copy sheet, the arrangement being such that each offset roller receives a copy of a different section of the printing form, and then prints the respective sections adjacent each other on the copy sheet when the same successively passes the printing lines of the two offset rollers.

ft is the object of the present invention to provide the reliably and fast operating offset machine using two offset rollers for printing different sections of a printing form on the same copy sheet.

Another object of the present invention is to provide an offset printing machine in which one offset roller prints the head section of a printing form, and another offset roller prints the text section of the printing form.

It is another object of the present invention to provide an offset printing machine in which one offset roller prints a head portion of a printing form, and the other offset roller prints a selected part or line of the text of the printing form on the same copy sheet on which the head section is printed.

It is another object of the present invention to control the offset roller which prints the text section in such a manner, that on each successive copy sheet and during successive revolutions of the main cylinder, different lines of the text section are printed adjacent the head section which is repeated on each copy sheet.

It is another object of the present invention to provide means for determining the number of lines of the head section, and for determining the number of lines in the part of the text section which is printed on the same copy sheet.

With these objects in view, one embodiment of the present invention comprises a main cylinder having holding means for holding a printing form and a copy sheet in circumferentially spaced positions; first and second offset rollers which are operated by a corresponding operating means to move between an operative position and an inoperative position cooperating with the main cylinder; and control means, preferably rotary cams, and cam followers connected to the operating means of the offset rollers.

The control cam means are driven in timed relation with the main cylinder, so that the motions of the offset rollers to the operative positions are synchronized with the passage of the printing form and copy sheet through the printing lines of the two offset rollers. The first offset roller is moved to the operative position when passed by the head section of the printing form, and the second offset roller is moved to the operative position when passed by the text section of the printing form.

Both offset rollers are moved to the operative position when passed by the copy sheet, and produce imprints on the same.

In the preferred embodiment of the invention, control cam means are rendered operative to hold the second offset roller in its operative position while passed by the 3,155,036 Patented Nov. 3, 1964 entire text section of the printing form, so that a copy of the entire text section is made on the second offset roller.

During the following printing operation, different cams, which can be adjusted to be effective for different time periods, move the second offset roller to its operative position only for a short time when the respective lines of the copy of the text section of the printing form on this offset roller is located opposite the main cylinder. Consequently only one or a few lines of the entire text which is copied on the second offset roller, are actually printed on the copy sheet, while the head portion is printed by the first offset roller fully on each copy sheet.

In the preferred embodiment of the invention, the second offset roller is shifted one step after each revolution of the main cylinder when a new copy sheet has been fed to the same, so that consecutive parts of the text sections are printed on successive copy sheets. The adjustment of the cams remains the same, so that, for example every copy sheet may receive the imprint of a different line of the text section.

By turning and adjusting the position of control earns, a line of the text which is spaced a great distance from the head section can be printed adjacent the head section on the copy sheet.

Preferably, the adjustable and setable control cams which control the movements of the two offset rollprs, are interconnected so that the movements of the two offset rollers to the operative positions are synchronized and take place in a timed relation. In a preferred embodiment of the invention, the two offset rollers successively print the respective sections of the printing form on the copy sheet, which makes it possible to print the text section of any desired number of lines, and a head section of any desired number of lines during a single revolution of the main cylinder.

The length of each section is determined by the length of two overlapping cam portions which simultaneously control two cam followers acting on the same offset roller.

In the preferred embodiment of the invention, a Washing device is provided with a roller for simultaneously Washing both of said rollers when the same are in the inoperative position after all copy sheets have been 1mprinted.

The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawing, in which:

FIG. 1 is a cross sectional view taken on line 1.1 in FfG. 2, with the sides walls of the machine omitted for the sake of clarity;

FIG. 2 is a fragmentary view taken on line 2-2 in FIG. 1 and illustrating a detail of the machine on an enlarged scale;

FIG. 3 is a sectional view' taken on line 3-3 in FIG. 1 and illustrating a detail of the machine on an enlarged scale;

FIG. 4 is a sectional View taken on line 4-4 in FIG. 5 and illustrating a transporting mechanism used in the machine of FIG. 1 for stepwise shifting and offset rollers;

FIG. 5 is a sectional view of the transporting mechardsm taken on line 5-5 in FIG. 4;

FIG. 6 is an electric diagram illustrating a circuit for setting the machine to different operations; and

FIG. 7 is a schematic developed view illustrating the cam tracks of the controlled cams.

Referring now to drawings, and more particularly to FIGS. 1 to 3, a main cylinder 1 is connected to a main drive shaft 2 for rotation therewith, and. is connected by a gear train 3, 4, 5, 7 to a shaft 84 to which a first offset roller 8 is secured. Consequently, offset roller 8 is driven in timed relation with the rotations of the main cylinder 1. The peripheral circumference of the main cylinder 1 is an integral multiple of the peripheral circumference of offset roller 8.

A second offset roller 9 has the same diameter, and is secured to a shaft 71 driven through a gear train 12, 11, 10, from gear 3 which is secured to the main drive shaft 2 Gear 11 also meshes with the gear 23 which drives a gear 25 secured to a control shaft 24.

Shaft 84 of oifset roller 3 is mounted on lever means 57 which are secured to a shaft 6. A lever 56 is also secured to shaft 6, as best seen in FIGS. 1 and 2, and carries a pin 55 mounted in a rocking limit which has two pins 53 and 51 located in slots 54 and of two cam follower levers 66 and 49. Cam follower roller 66a cooperates with a cam 29 whose angular position is adjustable on shaft 2a, and cam follower 49a cooperates with a cam 28 which is secured to shaft 2a. Shaft 2a is connected by a coupling 46 to shaft 2 of the main cylinder, as best seen in FIG. 2. When coupling 46 connects shafts 2 and 2a, cams 28 and 29 rotate, and cause a rocking movement of the rocking link 52 so that shaft 6 with lever means 57 and offset roller 8 is rocked.

Another cam 32 is secured to shaft 211 and rotates with the same and cam 28. A further cam 31 is fixedly connected to cam 29, and can be adjusted together with cam 29 so that the position of the cam projections of earns 29 and 31 relative to the positions of the cam projections of cams 28 and 32 can be adjusted. A gear 34 is secured to cams 2? and 31, and meshes with a gear 35 meshing with a gear 36 which is turnably mounted on shaft 24 and secured to a cam 33 so that the position of the cam projections of cam 33 relative to shaft 24 can be adjusted. A pair of cams 43 and 83 are secured to each other and to shaft 24 so that adjustment of cam 33 will also change the relative angular position between cams 33 and 43.

A cam follower roller 41, best seen in FIGS. 1, 3 and 6, is secured to an axially movable pin 41a which is slidable in bores of a cam follower means 41 turnable' about a shaft 60, as best seen in FIG. 1, and supporting shaft 71 on which offset roller 9 is mounted. A spring 59b is connected to a lever portion of cam follower means 59 and urges cam follower roller 41 into engagement with cams 43 and 83, and offset roller 9 to an inoperative position retracted from main cylinder ll. A corresponding spring 67 is connected to lever means 57 for holding offset roller 8 in a retracted inoperative position illustrated in solid lines in FIG. 1.

Pin 41a is connected to two springs 42 which are secured to two brackets on cam follower lever means 59, and which normally hold cam follower roller 41 in the dead-center position I illustrated in FIGS. 3 and 6. An electromagnetic means 49 has two opposite windings acting in opposite directions on pin 4142 which serves as an armature, so that energizing of the left winding of electromagnetic means 40 will move cam follower roller 41 to the position III, and energizing of the right winding will move cam follower roller 41 to the position II. Spring 42 opposes such movements since shifting of pin 41a moves spring 42 out of the illustrated dead-center position.

In the position I, cam follower roller 41 cooperates only with cam 43, in the position II the cam follower roller is inoperative, and in the position III, cam follower roller 41 is controlled by both cams 43 and 83 to perform two movements during one revolution of shaft 24, so that olfset roller 9 is moved twice to its operative position cooperating with the periphery of main cylinder 1.

Referring to FIG. 6, a source of voltage is connected through a transformer to a rectifier, one terminal of which is connected to a switch 39 so that in the two illustrated positions of switch 39, the left or the right winding of electromagnetic means 40 is energized. The winding which shifts cam follower roller 41 to its inoperative position 11, is connected through a contact 63:: to a relay 63 which has a holding contact 63b. A control switch is connected with relay 63 and has a projecting pin operated by a projection 61 on main cylinder 1. A holding means 58 for a copy sheet 27 is located adjacent projection 61, and a holding means 44 for a printing form 21 is located diametrically opposite holding means 58, and has a slot 44a in which a mask for partly covering printing form 21 may be mounted.

When switch 39 is in the position illustrated in solid lines in FIG. 6, relay 63 must be energized by operation of switch 62 to hold itself and contact 63a in a position in which electromagnetic means 40 holds cam follower roller 41 in the inoperative position I. When switch 39 is in the position shown in dash and dot lines, electromagnetic means 46: shifts cam follower roller 41 to the position III cooperating with both earns 43 and 83. When switch 39 is in intermediate position, springs 42 are effective to hold cam follower roller 41 in the intermediate position I cooperating only with cam 43.

Cam 69 carries a pair of cam follower levers 64 and 65, as shown in FIGS. 1 and 3, which have rollers 65a and 64a cooperating with cams 33 and 37 on shaft 24. As explained above, cam 33 is connected by the gear train 36, 35, 34 to earns 29 and 31 for simultaneous adjustment, and cam 37 is connected in a corresponding manner to a cam 28 for simultaneous adjustment. A rocking link has pins 90a and 96b located in slots of cam follower levers 64 and 6S, and assumes a position depending on cams 33 and 37.

A spring-loaded rising table 1? supports stack 18 of copy sheets 27 which are successively fed by a suction element 22 to the holding means 58 during each revolution of main cylinder 1. A fixed table 28 is provided for the insertion of a printing form into holding means 44. These operations are conventional, and not an object of the present invention.

The drive shaft 2 is continuously rotated by a motor, not shown, to move main cylinder 1 in counterclockwise direction, so that each point of the periphery of main cylinder 1 successively passes in moistening device 13, a preliminary moistening device 14, an inking device including an inking roller 17, a transfer roller 16, and a doctor roller 15. These devices can be moved between operative and inoperative positions in a conventional manner which is no object of the present invention.

A washing device 26 is movable between an inoperative position shown in solid lines in FIG. 1 and an operative position shown in dash and dot lines for washing the surfaces of offset rollers 8 and 9 when the same are in the inoperative positions shown in solid lines in FIG. 1 retracted from the surface of the main cylinder 1, and consequently from the printing form 25 and the copy sheet 2'7.

Gear 23, which is part of the gear train connecting main drive shaft 2 with control shaft 24, is composed of two parts which are connected to each other by a coupling 47 so that shaft 24, and the cams thereon are only driven when coupling 47 is in its engaged position.

Referring now to FIGS. 4 and 5, shaft 71 of offset roller 9 can be rotated by motor 79 which is connected by a one revolution clutch 86 to a gear 81 meshing with a gear 82 secured to shaft 71. The direction of rotation effected by motor 79 is opposite to the direction of rotation of shaft '71 when the same is driven through the gear train 12, ll, 10, and 3 from drive shaft 2 which causes shaft '71 to turn in the clockwise direction of arrow P in FIG. 5.

A pawl means 63 is secured to gear 12 and acts on a ratchet wheel 70 secured to a sleeve 69 which is fixed on shaft 71 and transmits the turning movement of the freely turnable gear 76 to shaft 71 and offset roller 9.

A locking wheel 76 is also mounted on sleeve 69 and secured to shaft 71. A pawl 68 locks the locking wheel 74) and is mounted on gear 12. Another pawl 75 is also mounted on gear 32 and cooperates with the ratchet wheel 76.

A spiral spring 77 has an outer end secured to gears 12 and an inner end secured to gear shaft 71, and is tensioned when shaft 71 is rotated by motor 79 so that it biases shaft 71 to turn in opposite direction after being wound up. One or several actuating members 74 can be placed in a position cooperating with pawl 73 to turn the same in the direction of the arrow Q whereby the locking pawl 75 is disconnected from the ratchet wheel 76, permittirig the same to perform a stepwise movement until again arrested.

When a lever 78 is moved from the inoperative position shown in solid lines in FIG. 5 to its operative position shown in broken lines, pawl as is disconnected from looking wheel 79, and a switch, not shown, is actuated by pawl 67 in the position shown in broken lines to connect motor 79 to a source of voltage so that shaft 71 is driven by motor 79.

Operation It is assumed that the printing form 21 has a head section which is to be printed on all copy sheets, and a text ection which may be printed fully on all copy sheets below the imprint of the head sections, or of which only a selected part or line is to be printed on the copy sheets adjacent the head portion.

In accordance with the present invention, the head section is printed by the oifset roller 8, and the text section is printed by the offset roller 9.

The operator adjusts the positions of cams 28 and 29 on the main shaft 2 so that the projecting cam portions of cams 23 and overlap along an arc 3% as shown in HQ. 1. The circumferential length of the overlapping cam portions determines the length of operative engagement between offset roller 8 and the rst section of the printing form 21, and the length St) is so selected that the head section of the text of the printing form can be transferred to the offset roller.

When cam 29 is angularly adjusted, cam 33 is turned the same angle, and since the cam projections of cams 29 and 31 are diametrically arranged, cam 31 becomes effective to shift the offset roller 8 to its operative position after main cylinder 1 has turned through 180, and the copy sheet 27 is located opposite the offset roller.

When cams 2 and 31 are angularly adjusted, cam 33 on shaft 2 is correspondingly turned through the gear train 34, 35 and as. Cam 37 is angularly adjusted to determine the extent of circumferential overlapping of the cam projections of cams 33 and 37, which is selected to correspond, for example, to one line of the text section of the printing form as indicated at 33 in FIG. 1. Due to the fact that control cams 29 and 33 are connected for simultaneous adjustment, the position of the overlapping cam portion 38 relative to the position of the overlapping cam portion 39 is determined in accordance with the positions of the head section and line sections on the printing form 21. All turnable cams are secured in the adjusted position to the respective shafts. As will be explained hereinafter in greater detail, the overlapping portions 3% effect movement of offset roller 9 to an operative position for printing under control of the overlapping portions 33, and by the simultaneous adjustment of cam 39 and cam 33, an imprint of a line of the text section of the printing form is produced directly below the imprint of the head section on copy sheet 27.

Switch 359 is placed in the illustrated position, but electromagnetic means 40 is still de-energized since contact 63a is open. Therefore, cam follower roller 4-1 is in the position I cooperating only with cam 43.

Assuming that the entire text is to be transferred to the offset roller, switch 3% is placed in the position shown in dash and dot lines in FIG. 6. Only the left winding of electromagnetic means 49 is energized, and moves cam follower 41 to position III in which cam follower 41 cooperates with both cams 43 and 83. The shape of these cams is so designed to actuate cam follower lever twice during each revolution of main cylinder 1, so that offset roller 9 is twice moved to its operative position cooperating with main cylinder 1. The projections of earns 43 and 83 have such circumferential length, and are spaced relative to each other such angular distances, that first the entire text of the printing form is transferred as a copy to offset roller 9 while offset roller 9 is held in its operative position by one of the cams, whereas the other cam is effective to move the offset roller a second time during the same revolution of main cylinder 1 to the operative position for making an imprint of the copy of the printing form thereon on the copy sheet 27.

The suction means 22 of the feeding device is raised, and the offset printing form 21 is automatically fed to the holding means 44 and attached to the main cylinder 1. The turning main cylinder 1 passes offset rollers 8 and 9, which are still in the retracted inoperative position, and the printing form 21 is moistened by the moistening rollers 13 and 14 which are at this time in the operative position indicated by dash and dot lines. During further rotation of main cylinder 1, printingform 21 is inked by inking roller 15, and is ready for the printing operation. During this preliminary rotation of main cylinder 1, coupling 46 and coupling 47 are disconnected, so that neither shaft 24, nor shaft 2a is rotated from shaft 2. Coupling as interrupts the connection between shafts 2 and 2a, as best seen in FIG. 2, and coupling 47 separates the two parts of the gear 23 so that gear 25 is not driven.

When the printing form has been inked and is ready for the printing operation, the couplings 46 and 47 are moved to the coupling positions thereof, which is accomplished by a cam or projection operating in synchronism with main cylinder 2 so that rotation of shafts 24 and 2a is started when main cylinder 1 is in a predetermined angular relation to the control cams on shafts 2a and 24.

The shoulder 48 of control cam 28 first engages roller 49a of cam follower lever 49 and turns the same about shaft 6 in the direction of the arrow (P. The rocking lever 52 is supported by its pin 53 in slot 54 of lever 66 which rests on control cam 29, so that pin 53 serves as fulcrum of rocking lever 52. Lever 56 is angularly displaced by pin rocking link 52 and turns shaft 6 so that lever means 57 is turned and moves oifset roller 7 from its inoperative position to its operative position. Cam 28 is so positioned that offset roller 8 rolls on the printing form 21 and receives a copy of the head section of the printing form which follows the holding means 44. The length of the overlapping portions of earns 28 and 29 is selected so that cam follower roller 4% drops onto a lower cam portion when the head section of the printing form has passed through the printing line between offset roller 8 and main cylinder 1, and consequently offset cylinder 8 is retracted before the text portion of the printing form reaches the region of offset roller 8. Consequently, only the head section of the printing form produces a miror script copy on offset roller 8. Spring 67 moves offset roller 8 to its inoperative position, and this operation is repeated during successive revolutions of the main cylinder 1, so that during each revolution, the head section of the printing form is transferred to offset roller 8.

During this transfer operation, the holding means 58 of copy sheet 27 passes the stack 18, and the suction element automatically inserts a copy sheet from the stack into the holding means 58. A new copy sheet is inserted into holding means 58 during each revolution of the main cylinder.

Since cam follower roller 41 is in the position I, only cam 43 controls the movement of cam follower lever 59 about shaft 60, so that offset roller 9 is moved to its operative position cooperating with main cylinder 1, and

cam 43 has such a shape and circumferential extension that a copy of the entire text section following the head section on printing form 21 is produced on offset roller 9.

After the transfer of the text section to offset roller has been completed, the projection 61, see PEG. 6, engages tbe actuating pin of switch 62 and closes the same so that relay 63 is energized, holds itself by contact 3b, and closes contact 63a. When switch 39 is shifted to the position shown in solid lines in FIG. 6, the right hand portion of electromagnetic means 40 is energized, and cam follower roller 41 is shifted to position I in which it does not cooperate with cams 43 and 33. During the following revolutions of main cylinder 1, switch 39 remains in this position so that during the successive revolutions of main cylinder 1, cam 43 is not again effective to cause a transfer of the entire text section to the offset roller 9.

The machine will be operated to imprint on the copy sheet lines or parts of the text section a copy of which was fully transferred to offset roller 9.

During the second half of the revolution of main cylinder 1, copy sheet 2% reaches the printing line L M of offset roller 9. Cams 33 and 37 are adjusted, as explained above, to actuate cam follower levers 6d and 6S, and thereby lever means 59 through pin 990, so that shaft 71 turns with lever 71:: about shaft 6.

Offset roller 9 is moved to its operative position rolling on the surface of copy sheets 27, and remains in this operative position as long as the overlapping portions of earns 33 and 37 are engaged by cam follower roller 6dr: and 65a. In this manner, a line, or other part of the text portion is printed on the copy sheet adjacent the head portion.

After holding means 58 has passed beyond printing line LM, it is automatically opened by a conventional device, so that copy sheet 27 is stripped from the peripheral surface of main cylinder 1, and drops onto a receiving plate 85 when offset roller 9 has moved bacl; to its inoperative position when the overlapping cam portions 38 are no longer effective.

It would be possible to print the same line of the text section of the printing form on all copy sheets. However, it is preferred to print on each consecutive copy sheet, and during successive revolutions of the main cylinder, different lines or parts of the text section directly below the imprint of the head section, which is to be repeated on all copy sheets. This is accomplished by the transporting means illustrated in FIGS. 4 and 5.

Main drive shaft 2 drives through a gear train gear 12 so that pawl 68 turns ratchet wheel 79 and thereby shaft 71 in the direction of the arrow P in FIG. 5. Offset roller 9 turns with shaft '71 until a projecting member '74 which can be turned to an operative illustrated position, turns pawl 73 in the direction of the arrow Q so that pawl 75 releases ratchet wheel 76 whereby spring 77 turns ratchet wheel '76 one step for each operative projecting member '74. Consequently, offset roller 5 which carries a copy of all lines of these text sections of the printing form, is angularly displaced to a position in which a different line or part of a text section will be located opposite main cylinder 1 when the overlapping cam portions 38 of cams 3'5 and 37 will be effective during the following revolution of main cylinder 1.

This operation is repeated during successive revolution of the main cylinder, so that every copy sheet receives an imprint of the head section from offset roller 8, and directly adjacent thereto an imprint of a different text line of the text section of printing form 21.

When all desired lines of the text section of a printing form are printed on successive copy sheets in this manner, spriiig 77 will be run down to some extent, and therefore it is necessary to wind up spring 77 before a new printing form is inserted into holding means 44 and a new series of copy sheets is printed.

Lever 78 is shifted to its operative position shown in broken lines in FIG. 5, and effects release of ratchet & Wheel 79 by pawl 68, and simultaneous closing of a switch, not shown, in the circuit of motor 79, so that the same turns shaft 71 through one revolution coupling '79 until spring 77 is again wound up, and ready for the next operation.

When the printing form 21 is automatically ejected, and all set cams are rendered inoperative, the automatic washing device is moved to an operative position for washing the surfaces of offset rollers 8 and 9, so that a new printing form can be inserted, and the printing of a new series of copy sheets can be started.

From the above description of a preferred embodiment of the invention, it will be understood that the lever systems which support the olfset rollers 8 and 9 are operating means for moving the offset rollers between inoperative positions spaced from the main cylinder, and operative positions cooperating with the same. The operating means are controlled by control means which include the above described control cams, and it will be understood that some of the control cams, for example, cams 3i and 29 are connected to other control cams 33 and 37 for simultaneous adjustment so that the imprint of a text part produced by offset roller 9 is located directly adjacent the imprint of the head section produced by offset roller 8.

It will be understood that each of the elements described above or two 'or more together, may also find a useful application in other types of printing machines differing from the types described above.

While the invention has been illustrated and described as embodied in an offset printing machine including two offset rollers for respectively printing the head section and successive lines of the text section of a printing form on successive copy sheets, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.

Without further analysis the foregoing will so fully reveal the gist of the present invention that others can by applying current knowledge readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention and, therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalence of the following claims.

What is claimed and desired to be secured by Letters Patent is:

1. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form having a plurality of text sections, and a copy sheet in circumferentially spaced positions on the periphery of said main cylinder means; a first offset roller; first operating means for moving said first offset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second offset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control means connected to said first operating means and driven in timed relation with said main cylinder means for moving said first offset roller to said operative position thereof when a first section of said printing form passes said first printing line whereby a copy of said first section is made on said first offset roller, and for moving said first offset roller to said operative position thereof when a first portion of said copy sheet passes said first printing line during a first revolution of said main cylinder means; and second control means connected with said second operating means and driven in timed relation with said main cylinder means and being mounted for selective angular positioning relative to the same for moving said second offset roller to said operative position thereof when a second selected text section of said printing form passes said second printing line during a first revolution of said main cylinder means whereby a copy of said second section is made on said second offset roller, and for moving said second offset roller to said operative position thereof during a second revolution of said main cylinder means when a second portion of said copy sheet passes said printing line whereby separate imprints representing said first and second selected text sections of said printing form are made on said first and second portions of said copy sheet.

2-. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form having a plurality 'of text sections, and a copy sheet in circumferentially spaced positions on the periphery of said main cylinder means; a firt offset roller; first operating means for moving said first offset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second offset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control means connected to said first operating means and driven in timed relation with said main cylinder means for moving said first offset roller to said operative position thereof when a first section of said printing form passes said first printing line whereby a copy of said first section is made on said first offset roller, and for moving said first offset roller to said operative position thereof when a first portion of said copy sheet passes said first printing line; and second control means connected with said second operating means and driven in timed relation with said main cylinder means and being mounted for selective angular positioning relative to the same for moving said second offset roller to said operative position thereof when a second selected text section of said printing form spaced from said first section passes said second printing line whereby a copy of said second section is made on said second offset roller and for moving said second offset roller to said operative position thereof when a second portion adjacent said first portion of said copy sheet passes said printing line whereby separate imprints representing said first and second spaced selected text sections of said printing form are made on said first and second portions of said copy sheet adjacent each other.

3. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form having a plurality of text sections, and a copy sheet in circumferentially spaced positions on the periphery of said main cylinder means; a first offset roller; first operating means for moving said first offset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second offset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control means connected to said first operating means and driven in timed relation with said main cylinder means for moving said first offset roller to said operative position thereof when a first section or" said printing form passes said first printing line whereby a copy of said first section is made on said first offset roller, and for moving said first oifset roller to said operative position thereof when a first portion of said copy sheet passes said first printing line; second control means connected with said second operating means and driven in timed relation with said main cylinder means for movin said second offset roller to said operative position thereof when a econd selected text section of said printing form passes said second printing line whereby a copy of 1i) i said second section is made on said second offset roller and for moving said second offset roller to said operative position thereof when a second portion of said copy sheet passes said printing line; and transporting means for turning said second offset roller in said inoperative position between angular positions in which selected parts or lines of said copy of said second section are located in said second printing line whereby separate imprints representing said first section and the selected part or line of said second selected text section of said printing form are made on said first and second portions of said copy sheet.

4. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form having a plurality of test sections, and a copy sheet in circumferentially spaced positions on the periphery of said main cylinder means; a first offset roller; first operating means for moving said first offset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second offset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control means connected to said first operating means and driven in timed relation with said main cylinder means for moving said first offset roller to said operative position thereof when a first section of said printing form passes said first printing line whereby a copy of said first section is made on said first offset roller, and for moving said first offset roller to said operative position thereof when a first portion of said copy sheet passes said first printing line; second control means connected with said main cylinder means for moving said second offset roller to said operative position thereof when a second selected text section of said printing form spaced from said first section passes said second printing line whereby a copy of said second section is made on said second offset roller and for moving said second offset roller to said operative position thereof when a second portion adjacent said first portion of said copy sheet passes said printing line; and transporting means for turning said second offset roller in said inoperative position between angular positions in which selected parts or lines of said copy or" said second section are located in said second printing line whereby separate imprints representing said first section and the selected part or line of said second selected text section of said printing form are made on said first and second portions of said copy sheet adjacent each other.

5. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form having a plurality of text sections, and a copy sheet in circumferentially spaced positions on the periphery of said main cylinder means; a first offset roller; first operating means for moving said first offset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second offset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control means including first and second angularly spaced control members connected to said first operating means and driven in timed relation with said main cylinder means, said first control member moving said first offset roller to said operative position thereof when a first section of said printing form passes said first printing line whereby a copy of said first section is made on said first offset roller, and said second control member moving said first offset roller to said operative position thereof when a first portion of said copy sheet passes said first printing line during a first revolution of said main cylinder means; and second control means ineluding third and fourth angularly spaced control members connected with said second operating means and driven in timed relation with said main cylinder means, said third control member moving said second offset roller to said operative position thereof during a first revolution of said main cylinder means when a second selected text section of said printing form passes said second printing line whereby a copy of said second section is made on said second ofiset roller, said fourth control member moving said second offset roller to said operative position tiereof during a second revolution of said main cylinder means when a second portion of said copy sheet passes said printing line whereby imprints representing said first and second selected text sections of said printing form are made on said first and second portions of said copy sheet.

6. An oifset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form having a plurality of text sections, and a copy sheet in circumferentially spaced positions on the periphery of said main cylinder means; a first offset roller; first operating means for moving said first oifset roller between an operative position cooperating with said main cylinder means along a first printing line and an inoperative position; second operating means for moving said second ofiset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control means including a first adjustable control member connected to said first operating means and driven in timed relation with said main cylinder means for moving said first offset roller to said operative position thereof when a first section of said printing form passes said first printing line whereby a copy of said first section is made on said first offset roller, and for moving said first offset roller to said operative position thereof when a first portion of said copy sheet passes said first printing line; second control means including a. second adjustable control member connected with said second operating means and driven in timed relation with said main cylinder means for moving said second offset roller to said operative position thereof when a second selected text section of said printing form spaced from said first section passes said second printing line whereby a copy of said second section is made on said second offset roller; and means connecting said first and second adjustable control members to each other so that the same are simultaneously adjusted in such a manner that said second adjustable control member moves said second ofi'sct roller to said operative position when a second portion of said copy sheet adjacent said first portion passes said printing line whereby separate imprints representing said first and second spaced selected text sections of said printing form are made adjacent each other on said first and second portions of said copy sheet.

7. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form having a plurality of text sections, and a copy sheet in circumferentially spaced positions on the periphery of said main cylinder means; a first offset roller; first operating means for moving said first offset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second offset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control means including first and second angularly spaced control cams and cam follower means connected to said first operating means and driven in timed relation with said main cylinder eans, said first control cam moving said first offset roller erative position thereof when a first section of said printing form passes said first printing line whereby a copy of said first section is made on said first offset roller, and said second control cam moving said first offset roller to said operative position thereof when a first portion of said copy sheet passes said first printing line; and second control means including third and fourth angularly spaced control cams, said third control cam moving said second offset roller to said operative position thereof when a second selected text section of said printing form passes said second printing line whereby a copy of said second section is made on said second offset roller, and said fourth control cam moving said second offset roller to said operative position thereof when a second portion of said copy sheet passes said printing line whereby separate imprints representing said first and second selected text sections of said printing form are made on said first and second portions of said copy sheet.

8. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form having a plurality of text sections, and a copy sheet in circumferentially spaced positions 011 the periphery of said main cylinder means; a first offset roller; first operating means for moving said first offset roler between an operative position cooperating with said main cylinder means along a first printing line and an inoperative position; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control means including a first adjustable control member connected to said first operating means and driven in timed relation with said main cylinder means for moving said first oifset roller to said operative position thereof when a first section of said printing form passes said first printing line whereby a copy of said first section is made on said first olfset roller, and for moving said first ofiset roller to said operative position thereof when a first portion of said copy sheet passes said first printing line; second control means including a second adjustable control member connected with said second operating means and driven in timed relation with said main cylinder means for moving said second offset roller to said operative position thereof when a second selected text section of said printing form spaced from said first section passes said second printing line whereby a copy of said second section is made on said second offset roller; and means connecting said first and second adjustable control members to each other so that the same are simultaneously adjusted in such a manner that said second adjustable control member moves said second offset roller to said operative position when a second portion of said copy sheet adjacent said first portion passes said printing line; and transporting means for turning said second offset roller in said inoperative position between angular positions in which selected parts or lines of said copy or" said second section are located in said second printing line whereby separate imprints representing said first section and the selected part or line of said second selected text section of said printing form are made adjacent each other on said first and second portions of said copy sheet.

9. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form having a heading and a plurality of text sections following said head section, and a copy sheet in circumtt'erentially spaced positions on the periphery of said main cylinder means; a first otfset roller; first operating means for moving said first offset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second oifset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control cam means driven from said main cylinder means and first cam follower means connected with said first operating means, said first rotary cam means having a cam tra ii for holding said first offset roller in said operative position when the heading of said printing form passes said first printing line, said cam track having a length corresponding to the length of said heading, and for holdin said firs-t offset roller in said operative position while a first portion of said copy sheet having a length corresponding to the length of said heading passes said first printing line during a first revolution of said main cylinder means; second control cam means driven from said main cylinder means and second cam follower means connected with said second operating means, said second control cam means including a transfer can] member having a transfer cam track and a printing cam member having a printing cam track, said transfer cam track having a length corresponding to the length of a text section of the printing form, and said printing cam track having a length corresponding to a part or line of said text section of said printing form; and means for first actuating said second cam follower means by said transfer cam member during a first revolution of said main cylinder means while the selected text section of the printing form passes said second printing line whereby a copy of said selected text section is transferred to said second oifset roller, and for then actuating during a second revolution of said main cylinder means said second cam follower means by said printing cam memher while a second portion of said copy sheet having a length corresponding to said part or line passes through said second printing line whereby separate imprints of said heading and of a part or line of said selected text section are made on said first and second portions of said cop-y sheet.

10. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form and a copy sheet in circiunferentially spaced positions on the periphery of said main cylinder means; a first offset roller; first operating means for moving said first offset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second offset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control cam means driven from said main cylinder means and first cam follower means connected with said first operating means, said first rotary cam means having a cam track for holding said first offset roller in said operative position when a head portion of said printing form having a length corresponding to the length of said cam track portion passes said first printing line, and for holding said first offset roller in said operative position while a first portion of said copy sheet having a length corresponding to the length of said head section passes said first printing line during a first revolution of said main cylinder means; second control cam means driven from said main cylinder means and second cam follower means connected with said second operating means, said second control cam means including a transfer cam member having a transfer cam track and a printing cam member having a printing cam track, said transfer cam track having a length corresponding to the length of the text section of the printing form, and said printing cam track having a length corresponding to a part or line of said text section of said printing form; means for first actuating said second cam follower means by said transfer cam member during a first revolution of said main cylinder means while a text section of the print-ing form passe-s said second printing line whereby a copy of said text section is transferred to said second offset roller, and for then actuating during a second revolution of said main cylinder means said second cam follower means by said printing cam member while a second portion of said copy sheet having a length corresponding to said part or line passes through said second printing line whereby imprints of said head section and of a part or line of said text section are made on said first and second portions of said copy sheet; and transporting means for turning said second offset roller in said inoperative position between angular positions in which selected parts or lines of said copy of said text sections are located in said second printing line whereby selected parts or lines of said text section are printed.

11. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form and a copy sheet in circumferentially spaced positions on the periphery of said main cylinder means; a first offset roller; first operating means for moving said first ofiset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second offset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control cam means driven from said main cylinder means and first cam follower means connected with said first operating means, said first rotary cam means having a cam track for holding said first otfset roller in said operative position when a head portion of said printing form having a length corresponding to the length of said cam track portion passes said first printing line, and for holding said first offset roller in said operative position while a first portion of said copy sheet having a length corresponding to the length of said head section passes said first printing line during a first revolution of said main cylinder means; second control cam means driven from said main cylinder means and second cam follower means connected with said second operating means, said second control cam means including a transfer cam member having a transfer cam track and a printing cam member having a printing cam track, said transfer cam track having a length corresponding to the length of the text section of the printing form, and said printing cam track having a length corresponding to a part or line of said text section of said printing form;

means for first actuating said second cam follower means by said transfer cam member during a first revolution of said main cylinder means while a text section of the printing form passes said second printing line whereby a copy of said text section is transferred to said second offset roller, and for then actuating during a second revolution of said main cylinder means said second cam follower means by said printing cam member while a second portion of said copy sheet having a length corresponding to said part or line passes through said second printing line whereby imprints of said head section and of a part or line of said text section are made on said said first and second portions of said copy sheet; and transporting means for turning after each revolution of said main cylinder means following said second revolution of said second offset roller in said inoperative position between angular positions in which successive parts or lines of said copy of said text sections are located in said second printing line whereby selected parts or lines of said text section are printed.

12. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form and a copy sheet in circumferentially spaced positions on the periphery of said main cylinder means; a first olfset roller; first operating means for moving said first offset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second offset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control cam means driven from said main cylinder means and first cam follower means connected with said first operating means, said first rotary cam means having a pair of cams adjustable for forming of overlapping parts thereof a composite cam track for holding said first offset roller in said operative position when a head portion of said printing form having a length corresponding to the length of said cam track portion passes said first printing line, and for holding said first offset roller in said operative position while a first portion of said copy sheet having a length corresponding to the length of said head section passes said first printing line; second control cam means driven from said main cylinder means and second cam follower means connected with said second operating means, said second control cam means including a transfer cam member having a transfer cam track and a printing cam member having a pair of cams adjustable for forming of overlapping parts thereof a composite printing cam track, said transfer cam track having a length corresponding to the length of the text section of the printing form, and said printing cam track having a length corresponding to a part or line of said text section of said printing form; and means for first actuating said second cam follower means by said transfer cam member while a text section of the printing form passes said second printing line whereby a copy of said text section is transferred to said second offset roller, and for then actuating said second cam follower means by said printing cam member while a second portion of said copy sheet having a length coresponding to said part or line passes through said second printing line whereby imprints of said head section and of a part or line of said text section are made on said copy sheet.

13. An offset printing machine comprising, in combination, main cylinder means; first and second holding means mounted spaced from each other on said main cylinder means for holding a printing form and a copy sheet in circumferentially spaced positions on the periphery of said main cylinder means; a first offset roller; first operating means for moving said first offset roller between an operative position cooperating with said main cylinder means along a first printing line, and an inoperative position; a second offset roller; second operating means for moving said second offset roller between an operative position cooperating with said main cylinder means along a second printing line, and an inoperative position; first control cam means driven from said main cylinder means and first cam follower means connected with said first operating means, said first rotary cam means having a pair of cams adjustable for forming of overlapping parts thereof; a composite cam track for holding said first ofiset roller in said operative position when a head portion of said printing form having a length coresponding to the length of said cam track portion passes said first printing line, and for holding said first offset roller in said operaiii lution of said main cylinder means; second control cam means driven from said main cylinder means and second cam follower means connected with said second operatng means, said second control cam means including a transfer cam member having a transfer cam track and a printing cam member having a pair of cams adjustable for forming of overlapping parts thereof a composite printing cam track, said transfer cam track having a length corresponding to the length of the text section of the printing form, and said printing cam track having a length corresponding to a part or line of said text section of said printing form, said composite cam tracks cooperating with adjacent portions of said main cylinder means; operator influenced means for first actuating said second cam follower means by said transfer cam member during a first revolution of said main cylinder means while a text section of the printing form passes said second printing line whereby a copy of said text section is transferred to said second offset roller, and for then actuating during a second revolution of said main cylinder means said second cam follower means by said printing cam member while a second portion of said copy sheet having a length corresponding to said part or line passes through said second printing line whereby imprints of said head section and of a part or line of said text section are made on said copy sheet; and transporting means for turning after each revolution of said main cylinder means following said second revolution of said second ofiset roller in said inoperative position between angular positions in which successive parts or lines of said copy of said text sections are located in said second printing line whereby selected parts or lines of said text section are printed on the copy sheet adjacent said imprint of said head section.

14. An offset printing machine as set forth in claim 13 wherein said operator influenced means include electromagnetic means, and a switch in the circuit of said electromagnetic means; and wherein said second cam follower tive position while a first portion of said copy sheet hav- 6Q ing a length corresponding to the length of said head section passes said first printing line during a first revomeans include a cam follower cooperating with said printing cam member, a cam follower lever and a cam follower roller mounted on said cam follower lever for movement between a first position cooperating with said transfer cam member and a second inoperative position, said cam follower roller being connected to said electromagnetic means and shifted by the same between said first and second positions.

15. An offset printing machine as set forth in claim 14 and including relay having a contact in the circuit of said electromagnetic means, a switch in the circuit of said relay, and a member on said main cylinder means for actuating said switch after the first revolution of said main cylinder means whereby said cam follower roller is shifted to said inoperative position and said cam follower and second cam means are controlled by said printing cam member.

References fitted in the file of this patent UNITED STATES PATENTS 576,276 Osborne Feb. 2, 1897 833,908 Ames Oct. 23, 1906 2,220,903 Higgins Nov. 12, 1940 2.397,053 Schneider Mar. 19, 1946 

1. AN OFFSET PRINTING MACHINE COMPRISING, IN COMBINATION, MAIN CYLINDER MEANS; FIRST AND SECOND HOLDING MEANS MOUNTED SPACED FROM EACH OTHER ON SAID MAIN CYLINDER MEANS FOR HOLDING A PRINTING FORM HAVING A PLURALITY OF TEXT SECTIONS, AND A COPY SHEET IN CIRCUMFERENTIALLY SPACED POSITIONS ON THE PERIPHERY OF SAID MAIN CYLINDER MEANS; A FIRST OFFSET ROLLER; FIRST OPERATING MEANS FOR MOVING SAID FIRST OFFSET ROLLER BETWEEN AN OPERATIVE POSITION COOPERATING WITH SAID MAIN CYLINDER MEANS ALONG A FIRST PRINTING LINE, AND AN INOPERATIVE POSITION; A SECOND OFFSET ROLLER; SECOND OPERATING MEANS FOR MOVING SAID SECOND OFFSET ROLLER BETWEEN AN OPERATIVE POSITION COOPERATING WITH SAID MAIN CYLINDER MEANS ALONG A SECOND PRINTING LINE, AND AN INOPERATIVE POSITION; FIRST CONTROL MEANS CONNECTED TO SAID FIRST OPERATING MEANS AND DRIVEN IN TIMED RELATION WITH SAID MAIN CYLINDER MEANS FOR MOVING SAID FIRST OFFSET ROLLER TO SAID OPERATIVE POSITION THEREOF WHEN A FIRST OFFSET OF SAID PRINTING FORM PASSES SAID FIRST PRINTING LINE WHEREBY A COPY OF SAID FIRST SECTION IS MADE ON SAID FIRST OFFSET ROLLER, AND FOR MOVING SAID FIRST OFFSET ROLLER TO SAID OPERATIVE POSITION THEREOF WHEN A FIRST PORTION OF SAID COPY SHEET PASSES SAID FIRST PRINTING LINE DURING A FIRST REVOLUTION OF SAID MAIN CYLINDER MEANS; AND SECOND CONTROL MEANS CONNECTED WITH SAID SECOND OPERATING MEANS AND DRIVEN IN TIMED RELATION WITH SAID MAIN CYLINDER MEANS AND BEING MOUNTED FOR SELECTIVE ANGULAR POSITIONING RELATIVE TO THE SAME FOR MOVING SAID SECOND OFFSET ROLLER TO SAID OPERATIVE POSITION THEREOF WHEN A SECOND SELECTED TEXT SECTION OF SAID PRINTING FORM PASSES SAID SECOND PRINTING LINE DURING A FIRST REVOLUTION OF SAID MAIN CYLINDER MEANS WHEREBY A COPY OF SAID SECOND SECTION IS MADE ON SAID SECOND OFFSET ROLLER, AND FOR MOVING SAID SECOND OFFSET ROLLER TO SAID OPERATIVE POSITION THEREOF DURING A SECOND REVOLUTION OF SAID MAIN CYLINDER MEANS WHEN A SECOND PORTION OF SAID COPY SHEET PASSES SAID PRINTING LINE WHEREBY SEPARATE IMPRINTS REPRESENTING SAID FIRST AND SECOND SELECTED TEXT SECTIONS OF SAID PRINTING FORM ARE MADE ON SAID FIRST AND SECOND PORTIONS OF SAID COPY SHEET. 